Asus PCI/I-486SP3G User manual

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e
Copyright
This Product, Including Any Software And Documentation, May Not, In
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©Copyright 1994 ASUSTek
Computer Inc.
Doc.
No: AS9408B, PCI!l-486SP3G User's Manual Rev 1.2
Related Mai.nboard : PCI!l-486SP3G P.C.B. Rev 1.8 and up
Related BIOS :#401A0-0301 or
up (Shown as Power On Boot up
Screen Top-Left Comer)
Date : 1994 August, ASUSTek COMPUTER INC.
~eeeGeeeeeeeeeeeeeGeeeeeeeeeeeeeeeeeeeeeeee
II

Table of Contents
Chapter 1: Feature Guide ............................................. 1-1
How The Manual Is Organized ........ ......... .. . .... .. ........................ 1-1
Main Features ................................................................................ 1-2
Static Electricity Precautions .......................
.. ... ........................... 1-4
Mainboard Layout ................................................................... 1-4
Using Your Mainboard ........................ ... ................................ .. . ... 1-6
Hardware Settings........... ... .. ................... ... .. ........................... 1-6
The System Configuration Record ...... ...... ............................ 1-8
Green Features ......................................................................... 1-9
On Board Multi I/O ... . .. .. ......... ... . .... ... . .. ....... .. . .. , .. . .. ....... ... . .. 1-10
System IRQs ....................
.. ............................ .. ....................... 1-11
The SCSI Controller............................................................... 1-12
Chapter 2: Upgrade Guide ........................................... 2-1
Installing Expansion Cards .......................................................... 2-2
Installation
Procedure .............................................................2-2
Assigning System IRQs ................................................................ 2-4
Selecting IRQ Settings for Edge-Triggered
Cards ............... 2-5
Upgrading System Memory ................................................. .. ..... 2-8
Configuring System Memory ................................................ 2-9
Installing
Memory Modules ............................................ .. .. 2-12
Installing A
CPU Upgrade ............................ .- .. .......... .. .............. 2-14
Installing a SCSI
Hard Disk or Other SCSI Device ................ 2-17
SCSI
ID Numbers & Termination ... ........................... .. ..... ... 2-17
SCSI Installation
Procedure ................................................. 2-18
Installing IDE
Hard Disks............................................ .. ............ 2-19
Installing a
Primary IDE Hard Disk ........ ... ........................2-19
Installing a Second IDE
Hard Disk ... ................. .. .. ............. 2-20
Chapter 3: Software Guide ........................................... 3-1
Award BIOS Setup .......................... .. ................ .. .......................... 3-1
Standard CMOS Setup ....... .. ...................................... .. . .. ........ 3-3
BIOS Features
Setup .. ........................................................... ... 3-8
Chipset Features Setup ... ............. .. ......,...... .. ... ................ .. ...3-12
Power Management Setup ................................................. .. 3-16
PCI
Configuration Setup ................................ .. . ... ................ 3-22
Load BIOS Defaults...............................................................3-24
.. , .......................................... .
II I

PC1/l-486SP3G User's Manual
Load Setup Defaults..................... ... ...................................... 3-25
Setting Supervisor & User
Passwords ..................:............. 3-26
IDE
HDD Auto Detection..................................................... 3-27
HDD Low Level Format ....................................................... 3-29
Save
And Exit Setup.............................................................. 3-30
Exit Without Saving .............................................................. 3-30
NCR SCSI BIOS & Drivers ...................................... .... ............... 3-31
Award Flash Memory Writer Utility ................... ... .................. 3-32
Chapter 4: Technical Summary ................................... 4-1
Jumper Setting Summary ............................................................. 4-1
ISA/PCI IRQ Assignments: JPl -JPlO ............................... .. 4-1
DMA Channel: JPll -JP12 ............................................. ... . .... 4-2
On-board SCSI Control: JP16 -JP17 .....................................4-2
CPU External Clock Selector: JP18 & JP20 ........................... 4-3
BIOS Flash
Memory Voltage Selector: JP21 ..................... .... 4-3 •
PS/2 Mouse Interrupt: JP22 (IRQ12) ................................. ... 4-4
Level 2 Cache Size: JP26 -JP29 .............................................. 4-4
CPU SL Selector: JP30 -JP32 ........................................ .. ....... 4-5
CPU Internal Clock Selector: JP33......................................... 4-5
CPU Type Selectors: JP34 -JP36, JP38 ...... .. .......................... 4-6
Intel
DX4/Cyrix DX2-V Voltage Selection: JP40 ................. 4-7
CPU Options .................... .. ......... ... ..................... .. ......................... 4-7
Memory Subsystem ................................................................ 4-8
Connectors.............................................................................. 4-10
Port & Controller Cables.................................................4-12
SCSI, FDD, & IDE Interfaces ...................... .. .................. 4-13
Serial and Parallel Interfaces ..........................................4-14
Connecting The
Power Supply ........... .... . ... . ... ..................... 4-14
The PCI-SC200 SCSI Interface Card ......................................... 4-15
Setting
Up the PCI-SC200........ ... ..........................................4-16
••••••••••••••••••••••••••••••••••••••••••
IV
Jl
Feature Guide
This manual explains how to use this system mainboard and in-
stall
upgrades. It provides an overview of the design and features of
the
board and gives useful informationif you want to change the con-
figuration of the board,
or a system it is installed in.
How The Manual Is Organized
This manual is divided into four chapters:
Feature
Guide - an overview of the board features
Upgrade Guide - upgrades for the board or system
Software Guide -the Setup Utility and other software
Technical
Summary -technical reference
The manual assumes that your mainboard is already installed in
a
computer system, so we've organized the contents to reflect this.
The first chapter introduces the mainboard's features and shows
where things are on the board in case you want to install an upgrade.
Chapter 2 explains how to install mainboard upgrades. It also
explains
what to do if a system upgrade affects the mainboard.
Chapter 3 Explains the Award BIOS Setup Utility program you
use to create the system configuration record, as well as the other
programs that help set up your system .
Chapter 4 lists the settings and specifications for the mainboard
and explains the SCSI interface card.
Since
we are assuming that your mainboard is already installed
in a system, it was most likely set up by your system dealer accord-
ing to the design specifications of your computer .
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
1- 1

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PCI/I-486SP3G User's Manual
This could mean that the mainboard's current settings are not the
same as the defaults shown in this manual. Your system manual may
have additional information on how the mainboard should be set up.
If you want to change the existing configuration, consult all of
your system documentation. Be certain that opening up and work-
ing on the system yourself won't violate your system warranty. Most
system vendors allow you to open the system to install expansion
cards or additional peripheral equipment.
This manual provides all the information you need to upgrade
or change the setup of the board. If you don't feel confident of your
ability to work on the computer yourself, ask your dealer or a quali-
fied teclmician to
do it for you.
Main Features
The PCI/I -486SP3G has many performance and system features
integrated onto the mainboard, including the following:
• Mulitple
CPU upgrade options. This mainboard can use any
Intel486 or compatible CPU or Pentium OverDrive (P24T) run-
ning at 25 or 33MHzexternally. You must have an Intel SL En-
hanced or Intel DX4 CPU to use the Green features.
•
"Green" features that meet Energy Star requirements, includ-
ing BIOS-level power management features and a connector
for a
system Suspend switch.
• High-performance Write-Through
or Write-Back "Level 2" ex-
ternal static RAM cache in three size options: 128KB, 256KB
and 512KB.
• Foursocket high-speed 32-bit
or 36 -bit DRAM design that uses
72-pin DRAM
modules in a wide variety of memory configu-
rations
up to 128MB for flexible and economical upgrades .
Feature Guide
1l
• Dual-bus design with 4 ISA and 3 PCI expansion slots. The PCI
bus runs at the CPU's external clock speed and all slots have
bus-master capability.
• Flexible
ISA/PC! bus IRQ assignments in both hardware and
firmware allow the use of both Level- and Edge-triggered PCI
expansion cards.
•
On-board 'Multi-I/0' connections: 2 serial ports, 1 parallel
port, configurable as primary or secondary COM and LPT
ports; an IDE
hard disk drive interface c01mector and a floppy
disk drive controller and connector.
•
On-board SCSI BIOS with an (optional) on-board PCI SCSI
controller
and a PCI-bus SCSI peripheral connector.
•
Model options of PS/2 keyboard and/or mouse connector .
• On-board multi-year battery support to maintain system con-
figuration information.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •••••••••••••••••••• g ••••••••••••••••••••••
1-2 1- 3

1l
PCI/I-486SP3G User's Manual
Static Electricity Precautions
Under the right conditions, static electricity will build up in your
body. If you touch the mainboard or other sensitive components, the
build - up will discharge into the components and circuitry. Computer
components are sensitive to damage from static electric discharge.
They can be damaged or destroyed if the discharge is powerful
e nough . Static build - up is most likely to occur in dry and cold con-
ditions,
but it is always important to be cautious.
To protect the mainboard and other components against damage
from static electric discharge, you should follow some basic precau-
tions whenever you handle them:
l. Use a grounding wrist strap. The strap will have an 'alligator'
clip at the end of a shielded wire lead. Clip it to a grounded
object. Any static electricity will then harmlessly discharge
through the strap . Put on and connect the strap before you
handle the components.
2. Use an anti-static pad. Put any components on the pad when-
ever you work on them outside the computer. If you don't have
a pad, put the components on the anti-static bag they came in .
Both the
wrist strap and pad are inexpensive and are generally
available
from computer supply companies.
Mainboard Layout
The following diagram shows the location of ports, connectors
and subsystems you can upgrade on the mainboard.
Feature Guide
1l
Mainboard Layout
00
D O
[[ill
rn ' Q
1
"' '"WM
, . CD
,D .
! . ' ' 0
Do
1. ZIF socket & CPU
5. Parallel & Serial connectors
2. ISA Bus expansion slots 6. Memory module sockets
3. PCI Bus expansion slots 7. SCSI, Floppy & IDE connectors
4. Keyboard &power connectors 8. L2 cache sockets
...........................................·•............................................
1- 4 J'I 1-5

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PCI/I-486SP3G User's Manual
Using Your Mainboard
In addition to the operating instructions in your system manual,
there are a few additional things specific to the mainboard you may
need to know. This section explains how to make hardware settings
on the mainboard and how the system configuration record works.
Following are useful information
on the board's "Green" features,
IRQs,
1/0 ports and peripheral device coru1ectors.
Hardware Settings
There are a variety of hardware setting options on the board.
These specify what hardware is installed on the board. The settings
are
made using something called 'jumpers'. A jumper is a set of two
or more metal pins with a plastic base mounted on the mainboard.
A plastic jumper 'cap' is used to establish hardware settings. This cap
has a metal contact inside which fits over two pins to create an elec-
trical contact
betw e en them .
Some
jumpers only have two pins, others have three. The jump-
ers are sometimes combined into sets called jumper blocks, where all
the
jumpers in the block must be set together to establish the hard-
ware setting. The figure below shows how this looks.
Jumpers and caps
ill il
.,.,.,, ll!llllllBll'
.erl
Jumper cap
3-pin jumper 2-pin jumper
Jumper block
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
1- 6
Feature Guide
1l
On the mainboard, the settings for each jumper are printed on the
board with a stylized bird's-eye view. For example, if a jumper has
three pins, connecting, or 'shorting', the first and second pins creates
one setting and shorting the second and third pins creates another.
The same type of diagram is used in this manual. The jumpers are
always shown from the same point of view as shown in the whole-
board diagram in this chapter. The figures below show what the
manual diagrams look like and what they represent.
Jumper diagrams
Jumpers are shown like this
Jumper caps like this
Jumper settings like this
Io G-€) 1
Io
G-€)1
I G-€) ol
Jumpers in
a 'block'
u
ill
.,.,.,,
.,
..
[O OJ
[O 0 O]
[0 G-€)[
~
Some jumpers are oriented
vertically; if
the pin position
needs to be shown, pin 1 is
marked.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
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PCI/I-486SP3G User's Manual
The System Configuration Record
All personalcomputers use a BIOS (Ba s ic Input Output Software)
as the basic software
that tells the computer how to function. In or-
der for the BIOS to function, there has to be a record of the computer's
hardware and configuration settings for it to refer to. This record is
created
by using a software program that is permanently stored in
the BIOS ROM chip on the mainboard . The program is called the
Setup Utility.
The
system configuration record the utility creates is also stored
on the mainboard. Unlike the utility program, the record is not re-
corded permanently. The memory it gets stored in must be main-
tained by battery power when the computer is turned off. If battery
support fails, the record will be lost and you will have to recreate it.
When you buy your computer, the system configuration record
will already
be set. It will be optimized for your computer hardware
and may vary from the Setup defaults. You should run the Setup Util-
ity
when you first use your computer. Write down the settings. There
is
an explanation of how to run the Setup Utility in Chapter 3.
Important:
In somecircumstances itis possible the configuration record may
be corrupted or lost. If this happens, your computer will not work
properly the next time you turn it on. This is not a serious problem.
To fix it, run the Setup Utility by pressing the Del key when you turn
the computer on and re-enter your configuration from your written
record. When you restart the computer, it will work normally.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
1-8
Feature Guide
1l
Green Features
This mainboard incorporates a number of features that when
used together with other electricity-saving components in a system
design fw1ction together to significantly reduce the amount of elec-
tricity
needed to operate the system. This saving both re duces your
computers operating cost and contributes to world-wide efforts at
environmental protection. The design specifications for this are de-
fined
by the Energy Star program being promoted by the Environ-
mental Protection Agency in the United States.
Your
mainboard can contribute to this effort in two ways. It can
use a low-voltage SL Enhanced or DX4 486 CPU that requires less
power and allows you to use the Power Management features built
into the BIOS Setup Utility. These features let you s et up your com -
puter so that it will enter on e of several low or minium power con-
sumption modes after a certain time. The power management scheme
includes two pre-defined schemes, Minimum and Maximum, and
one you can define yourself.
Power Management also provides thr ee power s aving mode s,
Doze, Standby
and Suspend whose activation delays you can define.
In addition, there is also a connector for a case-mounted system Sus-
pe
nd button that lets you put the system into Suspend mode when -
e
ver you like.
The section
on Power Management Configuration in Chapter 3
explains how to set up power management. Fully configured for
Green operation,
your system will be able to cut its electricity con-
s
umption to a fraction of the wattage it uses in full power mode .
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
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11
PCI/I-486SP3G User's Manual
On Board Multi 1/0
Your mainboard has Multi-1/0 functions built onto the board. In
your configured system you will access these as ports at the rear of
your computer and by using the peripherals attached to the control-
lerinterfaces
in use. Several of the ports and interfaces on your board
are high-performance versions the standard ones:
• Serial Ports
The serial ports use high perfromance 16550 UART chips that
allow the use of much higher transfer speeds.
• Parallel
Port
The parallel port supports two high performance modes, EPP
and ECP, which substantially enhance the performance and ca-
pabilities ofthe port.
If your printer and printer driver (or other
device) are compatible
with either of these modes, you can set
up your system up to use these enhancemen ts.
• IDE ISA Interface
The IDE interface on the mainboard is part of the ISA expan-
sion
bus. You can connect up to two IDE hard disk drives to
the interface connector . Use the Setup utility described in
Chapter 3 to automatically enter the drive specifications.
• SCSI PCI Interface
The SCSI ("Scuzzy") interface on the mainboard is part of the
PCI
expansion bus. This makes it very fast because, like any-
thing else running on the PCI bus, it runs at the CPU's exter-
nal clock speed, which will be either 25MHz or33MHz. If your
system isn't currently set up to use the SCSI interface, you can
refer to Chapters 3 and 4 for information on how to set it up.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • * • • • • •
1- 10
Feature Guide
11
System IROs
Later in the manual you'll see something call ed an "IRQ" men-
tioned severa l times. If you're not familiar with these, this is a s hort
explanation of what they are and why you may need to know about
them if you upgrade your system.
An IRQ, or interrupt request, is the process whereby an input or
output device tells the CPU to temporarily interrupt whatever it is
doing and immediately process something from the source of the
interrupt. When finished the CPU goes back to what it was aiready
processing . This happens very quickly. There are 16 IRQs, IRQ 0
through IRQ 15, in the ISA bus design. Devices that need an IRQ line
to
operate generally must have the use of that line exclusively.
Many expansion cards require the use of an IRQ line to operate,
for
example, network interface cards and sound cards. When you
install a card that uses an IRQ, it will have a default IRQ setting that
you might need to change if that IRQ is already in use. There are dif-
ferent
ways of setting an IRQ assignment, with jumpers being the
most common.
Both the ISA bus and the PCI bus use the same set of systemIRQs.
For the PCI bus there is an additional consideration. On the PCI bus,
you must assign an IRQ to the PCI slot you will install an IRQ-using
card in. There are two methods of generating an IRQ on the PCI bus,
level-triggering (level-sensitive)
and edge-triggering. Most PCI ex-
pansion cards use the level-triggered design. Some very f ew cards
may use the edge-triggered design instead . The mainboard design
therefore provides the means to set the IRQ assignment for a PCIslot
for
either type of card. This is explained in detail in Chapters 2 & 3.
You can also set th e IRQ used by the IDE hard disk interface, the
optional PS/2 mouse and th e SCSI controllerI interface by using the
BIOS
Setup Utility as explained in Chapter 3.
• • • • • • • 0 • • • • • • • • • • • • • • • • • 0 • • • • • • • • • • • • • • • • • • •
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I'
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PCI/I-486SP3G User's Manual
The SCSI Controller
As mentioned above, this mainboard has an on-board SCSI in-
terface. The interface is controlled
by an NCR 53C810 PCI Fast SCSI-
2 controller
and the NCR SCSI firmware recorded in the BIOS flash
ROM chip. The SCSI controller is a full 32-bit PCI
DMA bus master
and supports the ASP! and CAM standards.
You can connect a chain of up to seven devices to the SCSI inter-
face. The
standard version of the interface is for "internal" devices
installed in
your system case. The number ofinternal devices you can
connect is therefore likely to be
limited by the space limitations of
your case. The standard cable provided with the mainboard is for two
internal devices.
You can also obtain
an optional PCI bus SC200 SCSI interface card
that provides both internal and external connectors. With this card
you can connect both internal and external SCSI devices to your sys-
tem. Theare details on this card in
Chapter 4.
Two floppy disks with support drivers for the SCSI firmware and
controller come with your mainboard. There is detailed information
about the drivers in "ReadMe" files on the disks. There is more in -
formation
about these di sks in the section on "SCSI BIOS & Drivers"
in
Chapter 3.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
1- 12
~
Upgrade Guide
This section explains how to install options on your ma.inboard.
It covers the most likely and technically accessible upgrades you
might want to do, including adding expansion cards, increasing sys-
tem memory,
changing the CPU chip and adding IDE or SCSI hard
disks and other SCSI peripherals.
Installing
upgrades will either improve the performance of your
computer, or add some additional capabilities to it. You can install
upgrades yourself, or have your dealer or a qualified computer tech-
nician
do it for you.
It is also possible to increase the size ofthe Level 2 cache, but since
this is a
much more technically demanding upgrade that you are both
less likely to w1dertake and in most cases would probably require at
least partially disassembling your system, the technical reference in-
formation about it is in Chapter 4. It is probably best to have a quali-
fied technician
perform the upgrade for you if you want to upgrade
the cache.
I e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e
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PCI/I-486SP3G User's Manual
Installing Expansion Cards
There many ISA and PCI expansion cards you can install in your
system to expand its capabilities. Any card you get will come with
instructions on how to configure and install it. For your reference,
we have included a brief decsription here of how to install a card in
your system case. This is followed by an explanation of this
mainboard's requirements for installing expansion cards that use an
int err upt request line (IRQ). Please review the IRQ information care-
fully if
you are installing this type ofcard. If you're more familiar with
this topic, there is a chart-based synopsis of the required procedures
at the end of this section.
Installation Procedure
Expansion cards often require pre-installation configuration and
some times post-installation software setup. Check your card docu-
mentation for instructions on this. Once you have configured an ex-
pansion card you want to in sta ll, the installation procedure is fairly
simp l e. Your system manual should have instructions for installing
expansion cards specific to the design of your system case. The pro-
cedure here covers the basics for your reference.
Before you start, always make s ure the computer is turn ed off.
You s hould also make sure to observe s tandard static electricity di s-
charge precautions. You can damage your expansion card, the
mainboard, or both by not being careful about this.
The basic procedure for installing expansioncards is the· same for
both ISA and PCI cards. The components on ISA cards will face to
the
right as you view the computer from the front. PCI card compo-
nents face to the le ft. Please note that PCI Slot 3 and ISA Slot 1 share
the
same mounting bracket position, so you can only use one of these
slots,
not both.
• • • • • • • • • • 0 • • • • • • • • • • • • • • 0 • • • • • • • • • • • • • • • 0 •
2-2
Upgrade Guide
~
The basic procedure is as follows:
l. Open the system case to gain access to the expansion slots.
2. Remove the slot-cover corresponding to the slot you
want plan
to use. Put the slot-cover retaining screw aside and store the
slot
cover in case you need it later.
3. Remove the card from its protective packaging if you haven't
already.
4.
Align the card's slot connectors to the slot. Keep the card at a
90°
angle to the mainboard. Insert the card into the slot by
pressingitfirmly downward . If there is a lotof resistance, make
sure the slot connectors are lined up correctly. PCI cards require
very little pressure to insert.
5. Attach the card's mounting bracket to the case using the slot
cover screw you put aside in Step 2.
6. Close the case, turn on the computer and check to see if the
card is working properly as well as do any software set up re-
quired .
~
'i'
Remove the slm:
retaining screw
& slot cover
4
1
Use the screw to
secure the card to
the case
/ :
;.,: 1 - ;'. , , """:! * • ·::: * ·
r1r
4 1·
ri r
The component side of the card should face right ( or
up) for an ISA card and left (or down) for a PCI card
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2-3

~
PCI/I-486SP3G User's Manual
Assigning System /Ras
Both the ISA and PCI buses may need to use IRQs. You must con-
figure
any IRQ assignments so that the system can know which bus
is using a particular IRQ. You must assign IRQs correctly, or the
mainboard will not work properly.
As
mentioned in Chapter 1, there are 16 IRQs available. In an ISA
design,
some of them are already in use by standard parts of the sys-
tem
such as the keyboard or mouse. Drawing from the unused group
of System IRQs, you can assign an IRQ to either bus. Since both bus
designs use IRQs, we differentiate them by referring to the IRQs as-
signed to the ISA bus as ISA IRQs and to the PCI bus as PCI IRQs.
There is
an IRQ reference chart in Chapter 4.
The two bus designs deal with IRQs differently. In the ISA bus,
the IRQs are available to every slot and you define which IRQ is in
use by configuring the IRQ number on the expansion card you want
to install. You can then install the card in any available slot.
In the PCI design you assign an IRQ to a PCI slot rather than
doing it on a card. For PCI cards, you only need to set something
called the "INT" assignment. Since all the PCI slots on this mainboard
use "INTA#", you only need to make sure that any PCI card you in-
stall is
set to INT A. Of the PCI cards that use an IRQ, the overwhelm-
ing majority of them use a level-triggered IRQ design. You can assign
IRQs for this
type of card by using the BIOS Setup Utility. See the
section
on PCI Slot Configuration in Chapter 3.
Some very few PCI cards use an edge-triggered IRQ design. For
these you have to assign the PCI Slot IRQ by also setting a jumper in
jumper blockJPl -10. The block sets the assignments for IRQs 5, 9, 11,
14, and 15. These jumpers only assign IRQs for edge-triggered cards.
Their default settings leave the five IRQs unassigned and available
to
either the ISA bus or level-triggered PCI cards.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2-4
Upgrade Guide
~
You do not need to assign a System IRQ to a PCI slot unless you
install a card in it that needs an IRQ. If you don't assign a System
IRQ to a PCI slot in the Setup Utility, the unused IRQS are available
to the ISA bus.
Selecting IRQ Settings for Edge-Triggered Cards
Set the IRQfor edge-triggered cards both in the Setup Utility and
on the board using the JPl-10 jumper block. The chart below shows
the setting options and the figure below it the defaults. Don't use the
SCSI settings.
System
Default
PCI Bus edge trigger IRO settings
IRO
setting
PCI 1 PCl2
PCI 3
IRQ 5
JP1&6 2-3
JPl 1-2
JPl 3-4
JP61-2
IRQ 9
JP2&7 2-3 JP21-2
JP2 3-4
JP7 1-2
IRQ 11
JP3&8 2-3 JP31-2
JP3 3-4
JPS 1-2
IRQ 14
JP4&9 2-3
JP4 1-2
JP4 3-4
JP91-2
IRQ 15
JP5&10 2-3
JP51-2 JP5 3-4
JP10 1-2
Note: You can only select one option for each IRO.
JP6
JPl
JP7 JP2
JPS JP3
JP9 JP4
JPlO JP5
-cnz --o --o --o
Znn Zn Zn Zn
-l~:o -le:;) -l;;::) -;:::;
IRQ5
IRQ9
IRQ11
IRQ14
IRQ15
0 88 0
0
88 0
O
Ge O
0Gf)O
O
Ge O
0
88 0
0
88 0
0
88 0
0
88 0
0
88 0
IRQ5
IRQ9
IRQ11
IRQ14
IRQ15
NCR SCSI
JP6 3-4
JP7 3-4
JPS 3-4
JP9 3-4
JP10 3-4
D
Default settings leave the IRQs listed available for level-triggered or ISA
bus expansion cards.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
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PCI/I-486SP3G User's Manual
Installing Expansion Cards That Use An /RQ
Choose slot
Assign IRQ to PCI slot
Select trigger
method
Configure & install card
Configure card
Assign IRQ setting
Choose ISA slot
Install
card
Example PCI installation procedure:
1. Choose aslot to use -
e.
g. PCI Slot 1- fixed INT A#
2. Assign a System IRQ to Slot 1-
e.g. use default IRQ 14
3.Select level- or edge-trigger
(see next page)
4. Configure the card you will install in PCI
Slot 1 to use INT A and install it
Example ISA installation procedure:
1. Configure the expansion card and select
the ISA IRO it will use
e.g. IRO 5
2.
Use System IRQ 5 ISA Bus default -
-
use JPl & 6default settings
-don't
assign IRQ 5 to PCI slot in Setup
PCI Slot Configuration
3. Choose an ISA slot to use -
e.g . ISA Slot 4
4. Install the card in ISA Slot 4
Choose slot I
I
Assign IRO
to PCI slot in Setup
T
Select trigger
method in Setup
I
Assign IRO to PCI Slot
by jumper
Choose slot
A~sign IRO
to PCI slot
Select
trigg e r ~,:~ hod ]
Upgrade Guide
~
PCI Edge-Triggered IRO Assignment
1. Choose aslot to use -
e.g. PCI Slot 2- fixed INT A#
2. Assign a System IRO to Slot 2
e.g. default IROl 1
3.Select trigger
method:
"Edge(BY JPl-5)"
4.
Set JP3 to 'IRO 11' (short pins 3- 4)
PCI Level-Triggered IRO Assignment
1. Choose aslot to use -
e.g . PCI Slot 1- fixed INT A#
2.
Assign a System IRO to Slot 1
e.g .default IRO 10
-J P4 default setting, pins 2&3 shorted
3.Select trigger
method : "Level (Auto)"
••••••••••••••••••••••••••••••••••••••••••• . ~ ' •• ••••••••••••••••••••••••••••••••••• • •••• 0
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PCI/I-486SP3G User's Manual
Upgrading System Memory
This section explains how to install more system memory. There
are instructions
on how to configure and install memory and an ex-
planation of the technical specifications required.
System DRAM is the
main source of data for the CPU. Data re-
mains stored in DRAM as long as the system is turned on, and is lost
when you turn it off. The Level 2 cache memory is Static RAM
(SRAM), which is faster than DRAM memory. When the CPU looks
for data, it first searches the cache.
If the information is not there, the
search continues in the DRAM. With this design, the CPU looks in
the fastest source of data first, which lets it operate as fast as possible.
The DRAM subsystem uses
memory chips permanently mounted
on small circuit boards to form "SIMMs" (Single In-line Memory
Modules). The memory chips have a speed rating that is measured
in nanoseconds (ns). The PCI/I-486SP3G requires fast page mode
DRAM with a speed of at least 70ns.
This
mainboard can use 72-pin SIMMs in six sizes of lMB, 2MB,
4MB, 8MB, 16MB,
and 32MB (megabytes). Depending on the com-
bination of modules you use, you can install between 4MB and
128MB. The 32-bit modules used for this board come with memory
chips on either one or both sides of the module.
Upgrade Guide
~
Configuring System Memory
If you want to add system memory, you must use the configura-
tion
options and specifications shown in this section.
Memory Combinations
You can configure the memory of the PCI/I-486SP3G in a vari-
ety of ways, using different combinations of SIMM modules. You
can
configure the mainboard's 4 SIMM sockets in 48 combinations using
lMB, 4MB, and 16MB SIMMs with chips on only one side of the
SIMM, and 2MB, 8MB, or 32MB SIMMs with chips on both sides.
The chart
on the next two pages shows the possible combinations.
Under "Type", SIMMs with chips on one side are listed as "Single";
those
with chips on both sides are listed as "Double".
The only restrictions are:
• You must use 2 sockets at a time, in sequence, e.g. SIMMl
and SIMM 2, SIMM 3 and SIMM 4, or all four sockets at
once.
• Each pair of modules must be the same size and speed.
• Required Memory Specifications:
Module Size: lMB, 2MB, 4MB, 8MB, 16MB, or 32MB
DRAM Mode: Fast Page Mode
DRAM Speed: 70ns (or faster)
RAS access time [Trac]: 60ns -70ns
CAS access time [Tcac]: lOns -25ns
Parity: Either
parity or non-parity
••••••••••••••••••••••••••••••••••••••••••• j l• ••••••••••••••••••••••••••••••••••••••••••••
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PCI/I-486SP3G User's Manual
Upgrade Guide
~
Supported Memory Configurations
SIMM Sockets 1& 2 SIMM Sockets 3& 4 Total
SIMM Sockets 1& 2
SIMM Sockets 3& 4
Total
Size
Type
Size
Type Memory
II
Size
Type
Size
Type
Memory
1MB
Sing le
empty
2MB*
8MB
Double
empty
16MB *
1MB
Si ngle 1MB
Single 4MB
8MB
Doub le
1MB
Single
18MB
1MB Single
2MB
Double
6MB
8MB
Double
2MB
Double
20MB
1MB Si ngle 4MB Single
10MB
8MB
Doub le
4MB
Single
24MB
1MB Single
8MB
Double
18MB
8MB
Double
8MB
Double
32MB
1MB Single 16MB Sing le 34MB
.i
16MB
Single
48MB
I
8MB
Double
1MB Single
' '
Double
80MB
32MB
Double
66MB
I •
8MB
Double
32MB
I
2MB
Double
empty
4MB *
~
<t
16MB
Single
empty
32MB *
2MB Doub le 1MB
Single 6MB
16MB
Si ngle
1MB
Single
34MB
2MB Double 2MB Double
8MB
I
16MB
Single
2MB
Double
36MB
2MB Double 4MB
Single 12MB
16MB
Si ng le
4MB
Single
40MB
2MB Double 8MB Double 20MB
16MB
Single
8MB
Double
48MB
II
2MB Doub le 16MB Single
36MB
' I
16MB
Single
64MB
16MB
Sing le
2MB Double
32MB Double 68MB
16MB
Single
32MB
Double
96MB
I
4MB Single e mpty 8MB*
I
32MB
Double
empty
64MB *
4MB Sing le 1MB
Single 10MB
32MB
Double
1MB
Single
66MB
I
Double
68MB
4MB Single
2MB Double 12MB
32MB
Doub le
2MB
4MB Single 4MB
Single 16MB
32MB
Doub le
4MB
Single
72MB
4MB Single
8MB Double
24MB
32MB
Double
8MB
Double
80MB
I
4MB Single 16MB
Sing le 40MB
G
(t
32MB
Double
16MB
Si ngle
96MB
4MB
Single
32MB Double 72MB
'
32MB
Double
32MB
Double
128MB
I;
11 Type: Single =Chips on 1 side; Double = Chips on 2 sides
*These can be reversed, i.e. Sockets 1/2 empty and Sockets 3/4 installed
11
I
11 .
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PCI/I-486SP3G User's Manual
Installing Memory Modules
This section explains how to install SIMMs. The sockets used at
the time of manufacture may vary from those illustrated here, but
they are still functionally the same.
Additional Safety Precautions
In addition to static electricity precautions noted in the first chap-
ter,
you should also be concerned about physical damage to your
memory modules. It is important not to touch the edge connectors
with your fingers while installing the SIMMs. The oil on your fingers
can cause corrosion to form on the connectors. The best way to pre-
vent this is to be careful not to touch the connector surfaces.
Installation Procedure
Make sure you have everything you need. Check all your safety
and anti-static precautions. As you follow the procedure, remove the
modules from their anti-static protection one at a time.
1. One-sided modules should face to the left. The modules will
insert in
one orientation only. The Pin 1 cut-out on the mod-
ule prevents you from inserting it the wrong way.
2. Press the module edge connector into the socket at a moder-
ate angle to the board .
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2- 12
Upgrade Guide
~
3. After you fully insert the module edge connector in the socket,
press it forward toward the vertical posts, so the alignment
pins at the top of each post fit into the circular holes at each
end of the module .
4. The
module should click into place as the retaining clips ateach
end of the socket snap over the edge of the module to secure
it
in place.
5. Repeat this procedure for each module you install.
Installing a Memory Module
\
~ "
I '
I ~~
Insertthe
SIMM into the
socket at
an
angle.
Press it
1 forward into
/' 1 the retaining
clips.
The installed
_L
SIMM should be
at 90 ° to the
ma inboard.
Module
cut-out at this end.
SIMM3
I
I11 11,
1
1 ~ .:
f ~ ·
i~ ;§:
: i, «
~ ~ 1 1~ 1 1 ~
11 "' 1Ir
1h 11 ID .. "'. ~ ' im
i< l I Bl l
' 'I ii l;U il ), LJ J
SIMMl
I
Pin 1
SIMMs have a
cut-out at one
end to indicate
the
Pin 1 end of
the module.
One -sided
modules face
to the left.
SIMM4 SIMM2
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2- 13

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PCI/I-486SP3G User's Manual
Installing A CPU Upgrade
If you want to improve your systemperformance, you caninstall
an upgrade CPU in the ZIF socket. You mu st first remove the exist-
ing CPU, and then set the CPU selection jumpers for the new CPU.
Be sure to follow sta tic electricity precautions very carefully. The CPU
is one of the most expensive part s of your sys tem and can be dam-
aged or destroyed by static electric discharge.
There are
several jump ers you n ee d to set when changing the
CPU. The jumpers settings def in e four specifications:
CPU Type -the kind of CPU is installed
Norm/SL - if it is an SL E nhanc ed Intel486™ CPU or not
External Clock Speed -the external operation speed. This is
also the
speed the PCI bus will operate at.
Intel
DX4™ Internal Clock Speed -the number by which the
external clock
speed is multiplied, the result ofwhich is the in -
ternal clock
spee d.
You
must have all of this information ready before you can in-
stall a
CPU upgrade. Remember that the chip speed will be listed
according to the faster internal clock speed. The
chart below shows
some examples:
Internal Speed
External Speed
486DX-33
33MHz
33MHz
486DX2-50
50MHz
25MHz
486DX2-66
66MHz
33MHz
486DX4-100
100MHz
33MHz
Upgrade Guide
CPU External Clock Selection
Speed
JP18 JP20
25MHz
2&3 2&3
33MHz
l- &"2 2&:i 1 &2
~~~~~~~~-
~
Norm/SL CPU Selection
Type
JP30 JP31
JP32
Non-SL CPU 2&3 1* 1*
SL CPU 1&2 1&2 1&2
* One cap shorts between Pin 1 of JP31 & JP32
Intel 4860X4™ Internal Clock Multiple
Multiple JP33
x2 2&3
x3
open
CPU Type Selection
CPU Type JP34 JP35
486DX/DX2/DX4
-
487SX/ODP* 2&3 1&2
486SX/SX2
1&2 1&2
P24D 2&3 2&3
P24T (Pentium ODP*)
2&3
2&3
* ODP = OverDrive Processor
LJ
8
D
c.... c.... c....
-0 -0 -0
w w w
N ~ 0
~
N ~
'®®
DD
I
JP36
JP38
2&3 Open
2&3 Op en
1
&2.4&5 Short
1 &2.4&5 Open
~
IMPORTANT NOTE: You must also set JP40 to the Cyrix setting if
you install a Cyrix DX2-V CPU. See Chapter 4.
. ~ ~ ;; ...................................... ·1· •.....................•............... ; ·_ .1 ~.

'1
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PCI/I-486SP3G User's Manual
Installing a CPU in the ZIF Socket
1. Make sure the ZIF socket lever is up.
To raise the lever, pu_ll it out to the side
alittle and raise it as far as itwill go.
Pin 1 is at the arm corner.
2. Align the CPU and socket Pin 1
corners. The pins on the bottom should
align with the inner 3 rings of holes in
the socket- unless you are installing
Pentium technology.
3. Place the CPU in the socket. It should
insert easily. If it doesn't, pull the lever
up alittle more.
4. Press the lever down. The plate will
slide forward. You will feel some
resistance as the pressure starts to
secure the CPU in the socket. This is
normal and won't damage the CPU.
When the CPU is installed, the lever
should snap into place at the side of
the socket.
lever // Pull lever
b
~
ut&up
Pin 1
position. ~·>:.· .. ·- ,-"
! " ' · · 1 0 ; <;1;~
Sliding l
plate ~lign ~PU &
insert 1t
CPU Pin '1
'
· · ~ ··· · .. ~ , :§.f!f~1
r
-
1111
, .. ··<·:.: ;? - ~ . !, 'l : r : •· ,. ,,'1, .~ i. ~ · :-=-~ ':. ·f...,
f I ~ .... i1i_'i. '.i< {~~f"
/
h JPresslever
ff down
l
f
in '<. ··- .. ··-- -.. .z;.-1
'f' f ~ -~.. ...... _,,/·
flL'-;· ·,'i':.; · >·/
1
'-'rr
The plate slides
forward
.. ___ _ -......_
Note: To remove a CPU, pull the lever . . .~:q
out to the side alittle and raise it as far r lh ~ · ·.::c·· ··· .. . ., .. ·~·, .. ··
as itwill go. Lift out the CPU chip. -----.... -
11
t::rn !?'
••••••••••••••••••• .• •••••••••••••••••••••• • r.
2- 16
Upgrade Guide
~
Installing a SCSI Hard Disk or Other SCSI Device
The procedure to install internalSCSI devices is the same whether
the device is a hard disk drive or something else. This mainboard
comes with a cable to install two internal SCSI devices. To connect
e
xternal SCSI devices you need the optional SC200 card described at
the end of Chapter 4. Follow the installation intructions that come
with the device.
SCSI ID Numbers & Termination
SCSI devices differ from other peripherals you may be familiar
with in two important ways. Because up to seven SCSI devices can
be linked together in a chain, each device must hav e an identifica-
tion
number so that the controllercan tell them apart. In addition, the
chain must be terminated with a resistor at each end.
When you install a SCSI device, you must set its ID number and
make sure that no other device is using that number. You can use
numbers 0 through 6. The controller counts as a device in the chain
a nd uses ID #7. Check your device manual for how instructions on
how to set the SCSI ID number.
However many devices you have in a SCSI chain, the first and
last device must be terminated. The mainboard has terminators built
onto it. The terminators are controlled by jumper JP16. If one end of
the
chain ends at the mainboard, the terminators must be enabled .
The only
way that the mainboard can be one end of the chain is if you
have only internal or only external devices installed . Since the
mainboard ships with a cable for internal devices, the default setting
leaves JP16 open and termination Enabled. If you get the optional
SC200 card and connect both external and externaldevices, you must
Disable the terminators on the mainboard. There is more information
about this in the section on the SC200 card at the end of Chapter 4.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2 - 17

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PCI/I-486SP3G User's Manual
SCSI Installation Procedure
In general, to install an internal SCSI device do as follows:
1. Follow the instructions in your computer system manual for
installing a device
in an empty drive bay and connecting a
power cable to it.
2. Connect one end of theSCSI ribbon cable to the device and the
other to the SCSI connector on the mainboard (see Chapter 4).
Thecolored edge of the cable should be at the Pin 1 side of the
connector
on the device and the mainboard.
3.
Connect the device LED connector, if it has one, to the JP15
LED connector
on the board.
4. Reassemble the system,
turn it on.
5. If the device is a hard disk drive, run the Setup Utility and set
the driveparameters in the StandardCMOS Setup entry for the
drive ("Drive C:"or "Drive D:") to "None" .
6. Enable "NCR SCSI Firmware" in Chipset Features Setup.
7. In PCI Configuration Setup, use the "NCR UsingIRQ" default
setting "9".
If the SCSI device is not a hard disk, it may require other software
setup. Refer to the
manual for the device for more information.
Note:
If you have both IDE and SCSI hard disks in your system,
the IDE
hard disk must be the boot drive, i.e. , Drive C:.
Also, if for
some reason you do not use the on - board SCSI con-
troller
and install a third-partySCSI controller card instead, you must
Disable the on-board controller by shorting jumper JP17. See page
4-3 for more information on this. To avoid potential conflicts, do not
mix different types of SCSI controller in the same system .
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2- 18
Upgrade Guide
~
Installing /OE Hard Disks
This section explains how to install IDE hard disk drives. You can
connect
up two IDE hard disks to the on-board connector. The point
of this section is to explain the information specific to this mainboard,
not the basic procedure for how to install a hard disk in your system
case. Your system manual should have instructions specific to install-
ing deivices in your case.
If you already have a SCSI hard disk and you decide you want
to install an IDE drive also, the IDE drive must be Drive C:.
Installing a Primary IDE Hard Disk
To install a first IDE hard disk do the following:
1. Follow the instructions in your computer system manual for
installing a
hard drive in an empty drive bay and connecting
a
power cable.
2. Connect one end of the IDE ribbon cable to the drive and the
other to the IDE connector on the mainboard (see Chapter 4) .
The colored
edge of thecable should be at the Pin 1 side of the
connector
on the hard disk and the mainboard.
3.
Connect the drive LED connector to the JP14 LED connector
on the board.
4. Reassemble the system, turn it on and run the Setup Utility.
5. Use IDE HDD AUTO DETECTION to detect the drive param-
eters and enter them for "Drive C:".
6. Enable "Onboard IDE Controller" in Chipset Features Setup.
7. In Power ManagementSetup, use the "HDD Adapter IRQ" de-
fault "14"
and set the "IDE Ports Accessed" option in System
Events to
"ON" if you willuse the power management feature.
-..........................................
2- 19

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PCI/I-486SP3G User's Manual
Installing a Second IDE Hard Disk
If you have space in your system case, you can install a second
IDE
hard disk drive using the pro c edure on the previous page. In-
stall the
drive in an empty drive bay and connect the unused middle
connector on the IDE cable to the drive. Note that a second IDE drive
in a computer system must be set to function as a "slave" drive, be-
cause the first IDE drive functions as the
"master" drive. The drive
manual should tell you how to do this. Most IDE drives use jumpers
to make this setting.
Once
you have installed the drive, you will need to use the BIOS
Setup Utility again to configure and record the presence of the sec-
ond drive as Drive D: in your system configuration record.
See
Chapter 3 for an explanationof how to use the hard disk auto-
detection feature.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
2- 20
~
Software Guide
This chapter explains the Setup Utility for the Award BIOS, the
SCSI BIOS
and drivers, and the system BIOS flash memory update
utility.
Award BIOS Setup
All computer mainboards of this type have a 'Setup' utility pro-
gram stored in the BIOS ROM that is used to create a record of the
system configuration and settings. If you recei~ed your mainboard
installed as part ofa system, the proper entries have probably already
been made. If so, you might want to call up the Setup Utility, as de-
scribed later, to take a look
at them, and perhaps record them for fu-
ture reference, particularly the hard disk specifications.
If you are installing the board or reconfiguring your system,
you'll need to enter new setup information. This section explains how
to use the program and make the appropriate entries.
The Setup Utility is stored in the BIOS ROM. When you turn the
computer on, a screen message appears to give you an opportunity
to call up the Setup Utility. It displays during the POST (Power On
Self Test). If you don't have a chance to respond, reset the system by
simultaneously typing the <Ctrl>, <Alt> and <Delete> keys, or by
pushing the 'Reset' button on the system cabinet. You can also restart
by
turning the system OFF then ON .
This message will
then reappear:
TO ENTER SETUP BEFORE BOOT PRESS CTRL -ALT -ESC OR DEL KEY
•• ••••••••••••••••••••••••••••••••••••••••
3- 1